Scheduled Site Workflow is always being terminated

I have this site workflow on sharepoint O365 that always being terminated. But when I run it manually it runs smoothly. It is just being terminated if it is scheduled. Please refer to the image below for the error.

I've put the whole workflow inside an action set to have an elevated permission and my workflow works by just querying from a list and sending it via email. But it's being terminated and my workflow didn't even start.

I just don't have any idea why it's not working. I really appreciate your help.

Did you setup the schedule workflow with Site collection admin right? On premise, the schedule workflow is failed to run, when we schedule with system account. We have to set the schedule with site collection admin account. Not sure, it is the same with SharePoint online. Please have a try.

Do you have Site Collection Admin right? I mean, try to set the schedule workflow with the user who has Site Collection Admin role. (Login to your site with one of the site collection admin account then set the workflow schedule). Please let me know if you have any doubts.